EP3871212A1 - Abstimmungsverfahren, herstellungsverfahren, computerlesbares speichermedium und abstimmungssystem - Google Patents

Abstimmungsverfahren, herstellungsverfahren, computerlesbares speichermedium und abstimmungssystem

Info

Publication number
EP3871212A1
EP3871212A1 EP19768851.8A EP19768851A EP3871212A1 EP 3871212 A1 EP3871212 A1 EP 3871212A1 EP 19768851 A EP19768851 A EP 19768851A EP 3871212 A1 EP3871212 A1 EP 3871212A1
Authority
EP
European Patent Office
Prior art keywords
acoustic transfer
feedback
transfer function
noise
function
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP19768851.8A
Other languages
English (en)
French (fr)
Other versions
EP3871212B1 (de
Inventor
Peter McCutcheon
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ams Sensors UK Ltd
Original Assignee
Ams Sensors UK Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ams Sensors UK Ltd filed Critical Ams Sensors UK Ltd
Publication of EP3871212A1 publication Critical patent/EP3871212A1/de
Application granted granted Critical
Publication of EP3871212B1 publication Critical patent/EP3871212B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R25/00—Deaf-aid sets, i.e. electro-acoustic or electro-mechanical hearing aids; Electric tinnitus maskers providing an auditory perception
    • H04R25/40—Arrangements for obtaining a desired directivity characteristic
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/175—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound
    • G10K11/178—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase
    • G10K11/1781—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase characterised by the analysis of input or output signals, e.g. frequency range, modes, transfer functions
    • G10K11/17813—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase characterised by the analysis of input or output signals, e.g. frequency range, modes, transfer functions characterised by the analysis of the acoustic paths, e.g. estimating, calibrating or testing of transfer functions or cross-terms
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/175—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound
    • G10K11/178—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase
    • G10K11/1787—General system configurations
    • G10K11/17879—General system configurations using both a reference signal and an error signal
    • G10K11/17881—General system configurations using both a reference signal and an error signal the reference signal being an acoustic signal, e.g. recorded with a microphone
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones
    • H04R1/1016—Earpieces of the intra-aural type
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K2210/00—Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
    • G10K2210/10—Applications
    • G10K2210/108—Communication systems, e.g. where useful sound is kept and noise is cancelled
    • G10K2210/1081—Earphones, e.g. for telephones, ear protectors or headsets
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K2210/00—Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
    • G10K2210/30—Means
    • G10K2210/301—Computational
    • G10K2210/3055—Transfer function of the acoustic system
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2460/00—Details of hearing devices, i.e. of ear- or headphones covered by H04R1/10 or H04R5/033 but not provided for in any of their subgroups, or of hearing aids covered by H04R25/00 but not provided for in any of its subgroups
    • H04R2460/01—Hearing devices using active noise cancellation

Definitions

  • the improved tuning concept is for example applied at a design stage, potentially on units that are not fully assembled, or in different states of assembly. Particularly, the improved tuning concept is used before shipment and use of the noise cancellation enabled audio system with the ear- mountable playback device.
  • a first acoustic transfer function between the speaker and the feedback noise microphone, a second acoustic transfer function between the speaker and an eardrum being exposed to the speaker, a third acoustic transfer function between an ambient sound source and the eardrum, and a fourth acoustic transfer function between the ambient sound source and the feedback noise microphone are provided.
  • Parameters of a feedback filter function being designed to process a feedback noise signal obtained with the feedback noise microphone are tuned.
  • a noise cancellation performance of the audio system at the eardrum is determined based on each of the first, second, third and fourth acoustic transfer functions and on the feedback filter function.
  • the feedforward filter target function is visualized. This allows, for example, easier tuning of the feedforward filter parameters to match or approximate the target function. For example, also the feedforward filter function is visualized during tuning of its parameters.
  • DFBM being the first acoustic transfer function
  • DE being the second acoustic transfer function
  • AE being the third acoustic transfer function
  • AFBM being the fourth acoustic transfer function
  • B being the feedback filter function .
  • the playback device also has an ambient noise microphone, determination and usage of the fifth filter function as described above can be included in the manufacturing method.
  • a non-transitory computer readable storage medium storing instructions thereon is disclosed.
  • Figure 3 shows an example implementation of a method
  • the headphone HP as an example of the ear-mountable playback device may be embodied with both the microphones FB_MIC and FF_MIC being active or enabled such that hybrid ANC can be performed, or as a FB ANC device, where only the feedback noise microphone FB_MIC is active and an ambient noise microphone FF_MIC is not present or at least not active.
  • Figure 2 shows an example
  • the headphone HP is placed onto a measurement fixture MF, which may be an artificial head with an ear canal
  • FIG. 3 an example block diagram showing a method flow of a method for tuning filter parameters of a noise cancellation enabled audio system with an ear-mountable playback device is shown.
  • the playback device is placed on the measurement fixture, like that shown in Figure 2, for measuring four or five acoustic transfer functions DFBM, DE, AE, AFBM and, optionally, AFFM in block 320.
  • the steps of blocks 310 and 320 are only necessary if the acoustic transfer functions are not available yet. For example, if the tuning of the filters of the noise
  • the first adjusted acoustic transfer function DE ' is determined according to
  • the ear-mountable playback devices may be manufactured in a common process, for example in the same lot, such that the acoustic properties of the playback devices can be assumed identical or nearly identical with negligible production tolerances. As a consequence, it can be assumed that the same filter parameters work for all of the playback devices with the same or similar performance. Hence, one playback device could be used for measuring the
  • An alternative embodiment would be to make measurements of some or all of the acoustic transfer functions: AFBM, AFFM, DFBM, and calculate or estimate AE' and DE' in a live
  • a headphone HP e.g. like that shown in Figure 1, can be connected to the mobile phone MP wherein signals from the microphones FB_MIC, FF_MIC are transmitted from the headphone to the mobile phone MP, in particular the mobile phone's processor PROC for generating the audio signal to be played over the headphone's speaker.
  • ANC is performed with the internal components, i.e. speaker and microphones, of the mobile phone or with the speaker and microphones of the headphone, thereby using different sets of filter parameters in each case.

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Neurosurgery (AREA)
  • Otolaryngology (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
  • Circuit For Audible Band Transducer (AREA)
  • Headphones And Earphones (AREA)
EP19768851.8A 2018-10-23 2019-09-18 Abstimmungsverfahren, herstellungsverfahren, computerlesbares speichermedium und abstimmungssystem Active EP3871212B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP18202052.9A EP3644307A1 (de) 2018-10-23 2018-10-23 Abstimmungsverfahren, herstellungsverfahren, computerlesbares speichermedium und abstimmungssystem
PCT/EP2019/075018 WO2020083575A1 (en) 2018-10-23 2019-09-18 Tuning method, manufacturing method, computer-readable storage medium and tuning system

Publications (2)

Publication Number Publication Date
EP3871212A1 true EP3871212A1 (de) 2021-09-01
EP3871212B1 EP3871212B1 (de) 2024-05-01

Family

ID=63965385

Family Applications (2)

Application Number Title Priority Date Filing Date
EP18202052.9A Withdrawn EP3644307A1 (de) 2018-10-23 2018-10-23 Abstimmungsverfahren, herstellungsverfahren, computerlesbares speichermedium und abstimmungssystem
EP19768851.8A Active EP3871212B1 (de) 2018-10-23 2019-09-18 Abstimmungsverfahren, herstellungsverfahren, computerlesbares speichermedium und abstimmungssystem

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP18202052.9A Withdrawn EP3644307A1 (de) 2018-10-23 2018-10-23 Abstimmungsverfahren, herstellungsverfahren, computerlesbares speichermedium und abstimmungssystem

Country Status (4)

Country Link
US (1) US11595764B2 (de)
EP (2) EP3644307A1 (de)
CN (1) CN113574593B (de)
WO (1) WO2020083575A1 (de)

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Publication number Priority date Publication date Assignee Title
EP3917155B1 (de) * 2020-05-26 2023-11-08 Harman International Industries, Incorporated Selbstkalibrierende im-ohr-kopfhörer
CN111757211B (zh) * 2020-07-23 2022-07-22 歌尔科技有限公司 降噪方法、终端设备及存储介质
US20220377468A1 (en) * 2021-05-18 2022-11-24 Comcast Cable Communications, Llc Systems and methods for hearing assistance
CN117178565A (zh) * 2021-11-19 2023-12-05 深圳市韶音科技有限公司 声学装置及其传递函数确定方法
US11457304B1 (en) * 2021-12-27 2022-09-27 Bose Corporation Headphone audio controller
CN115396774A (zh) * 2022-09-21 2022-11-25 深圳市汇顶科技股份有限公司 主动降噪方法和主动降噪耳机
WO2024119393A1 (zh) * 2022-12-07 2024-06-13 深圳市韶音科技有限公司 开放式可穿戴声学设备及主动降噪方法

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US4494074A (en) 1982-04-28 1985-01-15 Bose Corporation Feedback control
US4852177A (en) 1986-08-28 1989-07-25 Sensesonics, Inc. High fidelity earphone and hearing aid
US5138664A (en) 1989-03-25 1992-08-11 Sony Corporation Noise reducing device
ATE435572T1 (de) * 2006-12-01 2009-07-15 Siemens Audiologische Technik Hörgerät mit störschallunterdrückung und entsprechendes verfahren
GB2445984B (en) * 2007-01-25 2011-12-07 Sonaptic Ltd Ambient noise reduction
US9179237B2 (en) * 2011-12-16 2015-11-03 Bose Corporation Virtual audio system tuning
US9516407B2 (en) * 2012-08-13 2016-12-06 Apple Inc. Active noise control with compensation for error sensing at the eardrum
JP6125389B2 (ja) * 2013-09-24 2017-05-10 株式会社東芝 能動消音装置及び方法
US9293128B2 (en) * 2014-02-22 2016-03-22 Apple Inc. Active noise control with compensation for acoustic leak in personal listening devices
JP6402666B2 (ja) * 2015-03-27 2018-10-10 ソニー株式会社 情報処理装置およびその情報処理方法
CN110073676B (zh) * 2016-12-22 2022-11-29 辛纳普蒂克斯公司 用于主动噪声消去音频设备的终端用户调谐的方法和系统
EP3660835B1 (de) * 2018-11-29 2024-04-24 AMS Sensors UK Limited Verfahren zur abstimmung eines geräuschunterdrückungsfähigen audiosystems und geräuschunterdrückungsfähiges audiosystem
EP3828879A1 (de) * 2019-11-28 2021-06-02 Ams Ag Rauschunterdrückungssystem und signalverarbeitungsverfahren für eine ohrmontierbare wiedergabevorrichtung

Also Published As

Publication number Publication date
CN113574593B (zh) 2023-12-01
CN113574593A (zh) 2021-10-29
WO2020083575A1 (en) 2020-04-30
US11595764B2 (en) 2023-02-28
US20210400398A1 (en) 2021-12-23
EP3871212B1 (de) 2024-05-01
EP3644307A1 (de) 2020-04-29

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